Machine for making eyebolts and hooks



(No Model.) I 3 eeeeeeeeeeeee 1 J. W. BOWEN.

MACHINE FOR MAKING EYE-BOLTS AND HOOKS. No. 439,809.- Pat'ented Nov. 4', 1890.

(No Model.) 3 Sheets-Sheet 2.

J. W. BOWEN.

MACHINE FOR MAKING EYEBOLTS ANDHOOKS. No. 439,809. Patented Nov. 4, 1890.

0 J! 47 \CA (No Model.) s Sheets-Sheet 3.

J. W. BOWEN.

. MACHINE FOR, MAKING EYEBOLIS AND HOOKS. N0. 439,809 -Y Patented NOV. 4, 1890.

1 UNITED STATES P TENT OFFICE JOHN w. BOWEN, or JACKSONVILLE,ILLINOIS.

MACHINE FOR MAKING EYEBOLTS AND HOOKS.

SPECIFICATION forming part of Letters Patent No. 439,809, dated November 4., 1890. Application filed February 7, 1890. Serial No. 339,547. (lilo model.)

T 0. whom it may concern Be it known that I, JOHN W. BOWEN, a citizen of the United States, residing at Jacksonville, in the county of Morgan and State of Illinois, have invented certain new and useful Improvements in Metal -Working Machines; and I do hereby declare the following to be a full, clear, and exact description of the same, which will enable others skilled. in the art to which it appertains to make and use it.

My invention has especial reference to improvements in machines for making metallic eyes, and has for its primary object the provision of an efficient machine by the use of which the metal bar will be bent or doubled on itself to form the eye and the two branches then automatically welded together at one and the same heat.

A further object of the invention is to so construct a machine of this character that it can be readily adjusted to accommodate bars of different thicknesses and form eyes of any desired size.

A further object of the invention is to provide means for automatically stopping theoperation of the machine after the eye'has been formed; and, finally, the object of the invention is to provide a machine in which the operating mechanism will be compactly arranged and free from any very complex combinations, which are liable to get out of order. With these objects in View the invention consists in certain novel features of the device illustrated in the accompanying draw-- ings, as will be hereinafter first fully described, and then pointed out in the claims.

In the drawings referred to, Figure 1 is a perspective View of a machine constructed in accordance with my invention, parts being broken away and the hammer removed for the sake of clearness. Fig. 2 is a side elevation of the same, looking at the side opposite that seen in Fig. 1. Fig. Sisa detail side elevation of the upper end of the machine on a larger scale. Fig. 4 is adetail front elevation of the lower end of the machine. Fig. 5 is a transverse section of the machine. Fig. 6 is a detail view of one of the swages. Fig. 7 is a detail view of the main gear-wheel. Figs. 8, 9, and 10 are detail views of the devices for bending the bar.

The support for my improved machine consists of the base 1, the standard 2, rising therefrom, and the horizontal arm 3, projecting rearward from the upper end of the standard. These parts may be formed in one integral structure, and such construction will be found to answer every requirement when the machine is to be used to form eyes of only one size. I prefer, however, to so construct the device that it can be adjusted to difierent requirements, and to this end I provide a longitudinal groove 4 in the side of the standard at the upper end of the same, which is engaged by' the end of the'arm 3, and the arm is secured firmly to the standard by a bolt 5, passed transversely through the upper end of the same and a longitudinal slot 6 in the end of the arm, as will be readily understood.

On the front side of the standard, at the lower end of the same, I provide the bearingboxes 7, in which the driving-shaft S is journaled. This driving-shaft has a fly-wheel 9 on one end,and at its other end it is provided with a band-pulley 10, through which motion is imparted to the device from any suitable motor. The bearing-boxes, it will be observed, are secured upon enlargements of the standard, and between these enlargements I mount upon the driving-shaft a pinion 11, which is provided with a half-clutch 12 on its side. A sliding half-clutch 13 is keyed upon the shaft adjacent to the pinion 11, and is adapted to be thrown into and out of engagement with the half-clutch 12 by a lever 14., which is pivoted upon the front side of the standard above the driving-shaft and extends upward and to one side, as clearly shown. This lever is provided on its rear side with a lug or projection '15, thepurpose of which will hereinafter appear, and it is normally thrown away from the pinion 11 by a spring 16, which is secured upon the standard and bears against the side of the lever below the fulcrum or pivot of the same. The pinion 11 meshes with a gear-wheel 17, which is mounted on the side of the standard and to which all the operating parts are connected and by which they are driven. This gearwheel is provided on its inner side with a cam-groove 18 and on its outer side with a wrist-pin 19. The cam-groove is engaged by a roller or pin on the lower end of a reciprocating rod or bar 21, and to the wrist-pin I pivot the lower ends of the pitmen 22 23. The pitman 22 and the reciprocating rod 21 both act upon a vertically-movable rock-shaft 24, which is mounted in a vertical slot in the upper end of the standard and extends through the same. The pitmau 22 is connected to the rock-shaft by a crank-arm 26, to which it is pivoted, and which is rigidly secured to the shaft by a set-screw'27, thereby serving when actuated by the gear-wheel to rock or vibrate said shaft. The reciprocating rod is provided with an eye or bearing 23 at its upper end, and the rock-shaft is j ournaled in this bearing and thereby carried by the said rod.

In order to reduce the strain on the upper brace 29, having an eye coinciding with the eye in the rod, and the end of the shaft is inserted in the said eye 30, an additional" support for the said shaft being thus provided "and the twisting of the same guarded against. The reciprocating rod is provided with the lugs or proj eetions 31 32 on its front side, which extend in front of the standard set forth.

The pitman 23 is pivoted at its upper end tea crank-arm 33 on one end of rock-shaft 34-, which is j ournaled horizontally in the standard and extends entirely through the same. On the opposite end of this shaft I secure the crank-arm 35, which is pivoted to a connecting-rod 36, extending upward and rearward and having the front end of a spring 3'7 secured to its upper end, the rear end of said spring being secured to the end of the handle 38 of a power-hammer 39, which is pivoted or fulcrunied on the end of the supporting 'arm An eccentric or cam 40 is also secured upon this shaft 34 adjacent to the crank-arm 35, and moves within and acts upon a loop 41 on the upper side of a vibratory arm or rod'42, which is pivoted at its rear end to the standard and has its front end connected by a link 43 with the front end of a lever 44, pivoted to the arm 3 and extending over the upper end of the standard. Near the front end of this lever 44, I secure thereto the swagecarrier 45, to which the upper swage 46 is secured. The swage is provided with a plurality of grooved edges, so that it may be turned to present the proper edge to the work, according to the diameter of the bar being treated, and between the upper edge of the swage and the underside of the lever I arrangea bushing 47 to prevent the swage being battered by use. The lower swage 48 is similar in its construction to the upper swage 46 and rests upon a shoulder or flange 49 on the side of the standard at the upper end of the same. The said lower swage is secured to the standard by a bolt 50' passing through the swage and a horizontal slot 51 in the standard, so that it can be adjusted to the length of eye desired.

and the purpose of which will be hereinafter It will be understood, of course, that the upper swage is adjustable along the lever 44 for a similar purpose.

In rear of the lower swage I secure upon the shoulder 49 a gage 52 to measure the length of metal necessary to form an eye of the desired size. This gage consists of an L-shaped bracket having a ledge 53 on the front side of its vertical arm to support the end of the metallic bar and provided in its horizontal arm with a longitudinal slot 54, through which a securing-bolt is passed into the shoulder to fasten the gage in its adjusted position.

On the front side of the standard, at the upper end of the same and about on a line with the meeting edges of the swages, I arrange the grippers or clamping-jaws 55, which n are adapted to hold the heated bar while the end of the reciprocating rod, I provide the eye is being made. The lower jaw is secured rigidly to the standard and is stationary, while the upper jaw is fitted in a vertical groove in the front side of the standard and is adapted to be moved vertically, so as to close down on the bar by being connected to the lug 31 on the reciprocating rod 21.

, The free end of the vertically-movable rockshaft projects through the standard in rear of the 'swages and is provided with a socket 56, the centering-pin 57, around which the eye is formed, being secured in said socket by a set-screw 58, as shown. It will be seen at once that by having a number of centering pins of diiferent sizes the machine can be readily caused to make eyes of any desired internal diameter. I The rock-shaft is provided near its end with a flattened portion 59, which passes through the slot or notch in the end of the bending-lever 61, said slot or notch having flat sides, so that when the shaft is'rotated the bending-arm will be swung around the centering-pin and thereby caused to bend the heated bar to form the eye. The bending-lever has ahub 61 at its upper end, which enters the standard and forms a bearing for the lever, and the lever has an offset 62 at its free end, in which a set-screw 63 is mounted. The said set-screw bears on the pin or stud 64, which is mounted in alongitudinal slot 65 in the bending-lever, and thereby adj usts said stud to the thickness of the bar being worked. A roller 66 is provided at the end of the stud 64, so as to reduce the friction and wear between the said stud and the bar, as will be readily understood.

The construction and arrangement of the several parts of my improved machine being thus made known, the operation and advantages of the same will, it is thought, be readily understood and appreciated. The bar of metal, after being first heated to the proper V degree, is placed between the grippers or clamping-jaws and rested upon the lower swage and the gage, passing between the centering-pin and the stud carried by the bending-lever. The lever 14 is then manually vibrated to throw the half-clutches into engagement, thereby causing the machine to operate.

When the machine is at rest, the rod 21 is held up by the lug 32, resting on the lug upon the rear side of the lever 14, and the rock-shaft 24 is consequently held in an elevated position, so as to permit the insertion of the heated bar. When the lever 14 is vibrated, however, the rod 21, it will be seen at once, falls, thereby causing the rock-shaft to descend and make a slight bend in the bar, as will be readily understood upon reference to the drawings. At the same time the rockshaft is partially rotated by the pitman 23 and the crank-arm 26, so that the bendinglever is swung around the centering-pin and caused to bend the bar so as to form nearly a per clamping-jaw is brought down upon the heated bar, so as to hold the same in the machine when the rod 21 falls after the machine is started. During the operation of the machine the lug 32 on the rod 21 bears against the lug 15 on the lever 14, and thereby holds the two half-clutches in engagement. As soon as the gear-wheel 17 has completed one revolution,however, the rod 21 will be raised by the action of the cam-groove in said wheel, and the lug 32 being thereby carried above the lug 15 the spring 16 at once throws the lever 14 to one side, and consequently disengages the half-clutches and stops the machine. The upward movement of the rod 21 raises the upper clamping-j aw, so as to permit the removal of the unused bar and the completed eye, and at the same time the upper swage, the hammer, and the bendin g-lever willbe returned to their initial positions, thus bringing the machine into position to act upon another bar and form another eye.

My machine is very efficient in its operation and is almost entirely automatic, the only manual operations necessary being the feeding of the bar into the machine and the shifting of the sliding half-clutch to start the machine.

The machine can be easily adj ust-ed to make eyes of any desired sizes, and its advantages are thought to be obvious from the foregoing description, taken in connection with the accompanying drawings.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is

1. The combination of a verticallymiovable rock-shaft, a bending-lever carried thereby, and mechanism for operating said shaft, as set forth.

2. The combination of the vertically-movable rock-shaft, the bendinglever carried thereby, the swages arranged in front of the roclg shaft, and suitable operating mechanism, as setforth.

3. The combination of the bending devices, the swages arranged in front of the bending devices, the clamping-jaws arranged in advanceof the swages, and suitable operating mechanism, as set forth.

4. The combination of the bending devices, the swages arranged in advance of the bending devices, the hammer, and suitable operating mechanism, as set forth.

5. A machine for forming metallic eyes, comprising the following instrumentalities: a pair of clamping-jaws adapted to hold a heated bar, bending devices to double the bar on itself, swages to weld the branches of the double bar together, and a hammer to complete the welding? 6. The combination of the half-clutches adapted to engage and thereby throw the machine in operation, a lever connected to one of said clutches and having a lug on its rear side, a spring acting on said lever to hold the clutches normally disengaged, and the recip rocating rod having a forwardly-projecting lug adapted to engage the lug on the rear side of the lever, as set forth.

7. The combination of the stationary clampin g-j aw, the upper movable clamping-j aw, the reciprocating rod connected with the upper clampingjaw, and suitable operating mechanism, as set forth.

8. The combination of the standard, the

lower swage adjustahly secured thereto, the

lever, mechanism for vibrating said lever, and the upper swage adj ustably mounted on said lever, as set forth.

1 9. The combination of the support having a horizontal flange on its side, the bending devices mounted on the support, and a gage adj ustably secured upon said flange in rear of the bending devices, as set forth.

10. The combination of a vertically-swinging swage, a hammer adapted to strike upon the swage, and a single operating mechanism controlling both the swage and the hammer, as set forth.

11. A device for bending metal, consisting of a rock-shaft, a centering-pin secured in the end of said shaft, and a lever mounted on the said shaft, as set forth.

12. A device for bending metal, consisting of a rock-shaft, a bending-lever fitted on said shaft, and a stud or pin adj ustably secured to said lever, as set forth.

13. The combination of the vertically-movable rock-shaft having a flattened portion, mechanism for operating said shaft, the bending-leverhaving a notch in its end engaged by the flattened portion of the rock-shaft, and a stud mounted on the said lever and adjustable along the same, as set forth.

14. The combination of the operating mechanism, a spring-actuated lever adapted to throw the said mechanism into and out of motion, and a rod actuated by the said mechanism and acting on the lever, substantially as and for the purposes set forth.

15. The combination of the support, the hammer pivoted to said support, the spring secured to the hammer, the rock-shaft mounted in the support and having a crank-arm on one end, the connecting-rod connecting said crank-arm with the spring, and mechanism for operating the rock-shaft, as set forth.

16. The combination of the support, the lever pivoted thereto and carrying a swage adapted to coact with a sw'ag'e secured to the 7 support, the vibratory bar pivoted to the support below the lever and having a bail or loop on its upper side, the link connecting said bar to the lever, the rock-shaft mounted in the support and having a cam playing in the bail or loop, and mechanism for operating said shaft, as set forth.

17-. In a metal-bending mechanism, the combinati'dn of a driving-wheel having a 'cam-' groove in one side,a pitman pivoted at its lower end to said wheel, a rod having apin at its lower end engaging the cam-groove in said Wheel, the shaft journaled in the upper end of said rod and carrying a bending-lever, and the crank-arm on said shaft, pivoted to the upper end of the pitman, as set forth.

18. The combination of the hammer and swages, a single rook-shaft connected by intermediate devices to the hammer and swages to operate the same, a pitman connected to said rock-shaft, a reciprocating bar, a rockshaft mounted in said bar and carrying a bending-lever, a pitman connected to said shaft, and a single wheel operating the said bar and both pitmen, as set forth.

In testimony whereof I affix my signature in the presence of two Witnesses.

JOHN W. BOWEN.

Witnesses:

CHARLES A. BARNES, A. R. GREGORY. 

